ZF 4644.153.486 CLUTCH for WG 180/WG 200 | OEM Genuine Part

Overview

The ZF 4644.153.486 CLUTCH is a critical torque-transfer component engineered specifically for the WG 180 and WG 200 series transmissions. This OEM genuine part sits within the clutch pack assembly, directly engaging the planetary gear sets to facilitate smooth gear shifts under heavy load conditions. As a wear-sensitive element, the 4644.153.486 clutch controls hydraulic pressure modulation, ensuring precise power delivery from the engine to the driveline. When paired with a robust 4644105413: DISCONNECTION unit, this clutch maintains optimal engagement timing, while the 4642303093: OUTPUT FLANGE transfers rotational force downstream. The SKU 4644.153.486 is factory-matched to the 4644101222: TRANSMISSION HOUSING for precise alignment, and all mounting points are secured using the 0636021010: HEXAGON SCREW to prevent axial movement during high-torque operations.

Symptoms of Failure

• Delayed or harsh gear engagement — A worn 4644.153.486 clutch causes noticeable hesitation when shifting from neutral to drive, often accompanied by a jarring thud as hydraulic pressure fails to build correctly.
• Transmission fluid overheating — Slipping clutch plates generate excessive friction, raising oil temperatures beyond normal operating ranges and triggering warning lights on the dashboard.
• Intermittent loss of forward motion — As the clutch disc material degrades, the transmission may momentarily lose drive power under acceleration, particularly in lower gears, before abruptly re-engaging.
• Metallic grinding noise during shifts — Worn friction surfaces produce a distinct grinding or whining sound when the clutch attempts to lock up, indicating imminent mechanical failure.

Technical Specifications

Compatibility

This clutch is engineered for ZF WG 180 and WG 200 series transmissions, commonly found in medium-duty trucks, buses, and off-highway equipment. It directly replaces the original clutch pack in WG180 models and is cross-compatible with WG200 variants using the same hydraulic control system. The 4644.153.486 clutch also fits select ZF 6HP and 8HP automatic transmissions that share the WG platform architecture. Always verify the spline count and stack height against your existing assembly before installation.

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